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Test
Math
Domain
Algebra
Skill
Linear functions
Difficulty
Hard
ID: 6989c80a
Modded SAT Question Bank by Abdullah Mallik

Fx=95x-273.15+32

The function F gives the temperature, in degrees Fahrenheit, that corresponds to a temperature of x kelvins. If a temperature increased by 2.10 kelvins, by how much did the temperature increase, in degrees Fahrenheit?

  1. 3.78

  2. 35.78

  3. 487.89

  4. 519.89


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Correct Answer: A
Rationale

Choice A is correct. It’s given that the function Fx=95x-273.15+32 gives the temperature, in degrees Fahrenheit, that corresponds to a temperature of x kelvins. A temperature that increased by 2.10 kelvins means that the value of x increased by 2.10 kelvins. It follows that an increase in x by 2.10 increases F(x) by 952.10, or 3.78. Therefore, if a temperature increased by 2.10 kelvins, the temperature increased by 3.78 degrees Fahrenheit.

Choice B is incorrect and may result from conceptual or calculation errors.

Choice C is incorrect and may result from conceptual or calculation errors.

Choice D is incorrect and may result from conceptual or calculation errors.

Question Difficulty: Hard
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